Blue and Green: Time is running out for world powers to cut greenhouse gas emissions and prevent runaway global warming, while the need for a rapid transition to a low-carbon economy grows ever more urgent, a draft UN document has warned. Climate scientists and government officials are meeting in Berlin on Monday to finalise the Intergovernmental Panel on Climate Changes (IPCC) Working Group III report. Following on from the second study last months stark description of the devastating likely impacts of global...